in my 15" 209x50 I use 90 grs of goex powder under a barns 250 sabot or a lightfield alpha gold 300 sabots
Last year I took 3 deer with this load
In my knight lk93 I use 100 Grs of the goex under a knight 300 gr sabot.
I get very close to the same accuracy from the goex as I did with pyrodex just not as many shots, but the goex is about 1/2 the price of the pyrodex.